This repository provides the computational framework to identify and analyze "water whiplash" events, defined as abrupt transitions between drought and pluvial conditions—derived from terrestrial water storage (TWS) time series. To facilitate immediate application, we include a comprehensive global dataset simulated by the Community Water Model (CWatM), spanning the continuous period from 1950 to 2100 under combined historical and SSP585 high-emission scenarios. By executing the main script with this dataset, users can directly quantify and map the global spatial distributions and long-term trends of water whiplash frequency, duration, and intensity.